Egg,
I disagree, and I'll explain why.
From a purely economic point of view, and that of the UK/US oil companies an oil grab don't add up. Unless you've recently won the Nobel Prize for economics, there is'nt a viable arguement to support the notion of a US oil grab for the US economy. I relay the facts again:
At it's peak the (1980), Iraq could only produce 3.1m barrels a day (this equats to 3% of global production today.
Given the abuse and years of neglect Iraq can at a maximum prior to this gulf war only produce 2.8m barrels a day (declining fast)
It would take till 2010 to increase oil production to 5.5m barrels a day (equivalent to US, Russia and Saudi), at a cost well in excess of 20bn.
The Kuwaiti govt offered to hand over part of it's oil industry in the wake of the last gulf war, if the US were so desperate for oil this would have taken place. You know how much influence the US has over Kuwaiti oil? None, nadda zip etc.
Even assuming some divine intervention with immdeiate increases in oil production to say 6m barrels a day, the new Iraq (and it's US puppet masters you believe in) would'nt benefit from flooding the world markets with oil as it would push the price down. This means less revenue, less profit etc etc etc.
When push comes to shove, the US could go into Alaska, although the environmentalists don't like this idea, it could happen.
The only conspiracy theory (some people always need one), which makes even the slightest bit of sense to explain a War in Iraq is US fear of Chinese expansion. China and India will be by far the biggest consumer of oil in the near future, much of this they will have to import. Given their expansionist aims on the whole of Asia and the fundemental beliefs in Yin Yang and all that shiznit, places a threat to Global stability and peace. The US may be trying to shore up stability in the Middle east to counter this (far greater) future threat. Any other economic arguement is Poo, besides it would cost the US much much less to invest in Oil production in Russia / Siberia thus increasing their influence over the Russian govt (with the benefit of getting an old enemy on side).
Still your free to believe in what you want, Santa Claus, tooth fairy etc etc.